Peel the bananas and place them in a bowl with a little salt, then mash until smooth.
Beat the eggs, vanilla extract, and granulated sugar until light and fluffy.
Add the corn oil and mix well.
Add the mashed bananas and mix until well combined.
Add the sifted ingredients and stir again until fully incorporated.
Pour into a lined pan.
Place a clean kitchen cloth in the pressure cooker. Insert the rack and add water.
Place the pan into the pressure cooker and close the lid.
Turn the knob to 'STEAM'. Press 'STEAM' for 30 minutes and turn it ON.
When the pressure cooker beeps, release the steam pressure. When the whistling sound stops, press OFF and slowly open the lid. Let the cake cool before serving.
